mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-25 04:30:02 +00:00
8dff69b941
Signed-off-by: Aarushi Mehta <mehta.aaru20@gmail.com> Acked-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20200120141858.587874-16-stefanha@redhat.com Message-Id: <20200120141858.587874-16-stefanha@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
149 lines
4.0 KiB
Bash
Executable File
149 lines
4.0 KiB
Bash
Executable File
#!/usr/bin/env bash
|
|
#
|
|
# Test that backing files can be smaller than the image
|
|
#
|
|
# Copyright (C) 2010 IBM, Corp.
|
|
#
|
|
# Based on 017:
|
|
# Copyright (C) 2009 Red Hat, Inc.
|
|
#
|
|
# This program is free software; you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation; either version 2 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
#
|
|
|
|
# creator
|
|
owner=stefanha@linux.vnet.ibm.com
|
|
|
|
seq=`basename $0`
|
|
echo "QA output created by $seq"
|
|
|
|
status=1 # failure is the default!
|
|
|
|
_cleanup()
|
|
{
|
|
_cleanup_qemu
|
|
_rm_test_img "${TEST_IMG}.copy"
|
|
_cleanup_test_img
|
|
}
|
|
trap "_cleanup; exit \$status" 0 1 2 3 15
|
|
|
|
# get standard environment, filters and checks
|
|
. ./common.rc
|
|
. ./common.filter
|
|
. ./common.pattern
|
|
. ./common.qemu
|
|
|
|
# Any format supporting backing files except vmdk and qcow which do not support
|
|
# smaller backing files.
|
|
_supported_fmt qcow2 qed
|
|
_supported_proto file
|
|
_supported_os Linux
|
|
|
|
# Choose a size that is not necessarily a cluster size multiple for image
|
|
# formats that use clusters. This will ensure that the base image doesn't end
|
|
# precisely on a cluster boundary (the easy case).
|
|
image_size=$(( 4 * 1024 * 1024 * 1024 + 3 * 512 ))
|
|
|
|
# The base image is smaller than the image file
|
|
base_size=$(( image_size - 1024 * 1024 * 1024 ))
|
|
|
|
offset=$(( base_size - 32 * 1024 ))
|
|
|
|
TEST_IMG_SAVE="$TEST_IMG"
|
|
TEST_IMG="$TEST_IMG.base"
|
|
|
|
_make_test_img $base_size
|
|
|
|
echo "Filling base image"
|
|
echo
|
|
|
|
# Fill end of base image with a pattern, skipping every other sector
|
|
io writev $offset 512 1024 32
|
|
|
|
_check_test_img
|
|
|
|
echo "Creating test image with backing file"
|
|
echo
|
|
|
|
TEST_IMG="$TEST_IMG_SAVE"
|
|
_make_test_img -b "$TEST_IMG.base" $image_size
|
|
|
|
echo "Filling test image"
|
|
echo
|
|
|
|
# Write every other sector around where the base image ends
|
|
io writev $(( offset + 512 )) 512 1024 64
|
|
|
|
_check_test_img
|
|
|
|
echo "Reading"
|
|
echo
|
|
|
|
# Base image sectors
|
|
io readv $(( offset )) 512 1024 32
|
|
|
|
# Image sectors
|
|
io readv $(( offset + 512 )) 512 1024 64
|
|
|
|
# Zero sectors beyond end of base image
|
|
io_zero readv $(( offset + 32 * 1024 )) 512 1024 32
|
|
|
|
_check_test_img
|
|
|
|
# Rebase it on top of its base image
|
|
$QEMU_IMG rebase -b "$TEST_IMG.base" "$TEST_IMG"
|
|
|
|
echo
|
|
echo block-backup
|
|
echo
|
|
|
|
qemu_comm_method="monitor"
|
|
_launch_qemu -drive file="${TEST_IMG}",cache=${CACHEMODE},aio=${AIOMODE},id=disk
|
|
h=$QEMU_HANDLE
|
|
if [ "${VALGRIND_QEMU}" == "y" ]; then
|
|
QEMU_COMM_TIMEOUT=7
|
|
else
|
|
QEMU_COMM_TIMEOUT=1
|
|
fi
|
|
|
|
# Silence output since it contains the disk image path and QEMU's readline
|
|
# character echoing makes it very hard to filter the output. Plus, there
|
|
# is no telling how many times the command will repeat before succeeding.
|
|
# (Note that creating the image results in a "Formatting..." message over
|
|
# stdout, which is the same channel the monitor uses. We cannot reliably
|
|
# wait for it because the monitor output may interact with it in such a
|
|
# way that _timed_wait_for cannot read it. However, once the block job is
|
|
# done, we know that the "Formatting..." message must have appeared
|
|
# already, so the output is still deterministic.)
|
|
silent=y _send_qemu_cmd $h "drive_backup disk ${TEST_IMG}.copy" "(qemu)"
|
|
silent=y qemu_cmd_repeat=20 _send_qemu_cmd $h "info block-jobs" "No active jobs"
|
|
_send_qemu_cmd $h "info block-jobs" "No active jobs"
|
|
_send_qemu_cmd $h 'quit' ""
|
|
|
|
# Base image sectors
|
|
TEST_IMG="${TEST_IMG}.copy" io readv $(( offset )) 512 1024 32
|
|
|
|
# Image sectors
|
|
TEST_IMG="${TEST_IMG}.copy" io readv $(( offset + 512 )) 512 1024 64
|
|
|
|
# Zero sectors beyond end of base image
|
|
TEST_IMG="${TEST_IMG}.copy" io_zero readv $(( offset + 32 * 1024 )) 512 1024 32
|
|
|
|
|
|
_check_test_img
|
|
|
|
# success, all done
|
|
echo "*** done"
|
|
rm -f $seq.full
|
|
status=0
|